LP3985IM5-3.3 National Semiconductor, LP3985IM5-3.3 Datasheet - Page 6

• Manufacturer Part Number: LP3985IM5-3.3
• Description: IC, LDO VOLT REG, 3.3V, 150mA, 5-SOT-23
• Manufacturer: National Semiconductor

Specifications of LP3985IM5-3.3

• Primary Input Voltage: 6V
• Output Voltage Fixed: 3.3V
• Dropout Voltage Vdo: 100mV
• No. Of Pins: 5
• Output Current: 150mA
• Operating Temperature Range: -40°C To +125°C
• Termination Type: SMD
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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T
e
I
V
V
TSD
EN
n
ON
IL
IH
Symbol
Electrical Characteristics
Unless otherwise specified: V
and limits appearing in standard typeface are for T
temperature range for operation, −40˚C to +125˚C. (Note 7) (Note 8)
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device
is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the Electrical
Characteristics tables.
Note 2: All voltages are with respect to the potential at the GND pin.
Note 3: Additional information on lead temperature and pad temperature can be found in National Semiconductor Application Note (AN-1112).
Note 4: The Absolute Maximum power dissipation depends on the ambient temperature and can be calculated using the formula: P
where T
appearing under Absolute Maximum Ratings results from substituting the Absolute Maximum junction temperature, 150˚C, for T
More power can be dissipated safely at ambient temperatures below 70˚C . Less power can be dissipated safely at ambient temperatures above 70˚C. The Absolute
Maximum power dissipation can be increased by 4.5mW for each degree below 70˚C, and it must be derated by 4.5mW for each degree above 70˚C.
Note 5: The human body model is 100pF discharged through 1.5kΩ resistor into each pin. The machine model is a 200 pF capacitor discharged directly into each
pin.
Note 6: Like the Absolute Maximum power dissipation, the maximum power dissipation for operation depends on the ambient temperature. The 250mW rating for
SOT23-5 appearing under Operating Ratings results from substituting the maximum junction temperature for operation, 125˚C, for T
θ
The maximum power dissipation for operation can be increased by 4.5mW for each degree below 70˚C, and it must be derated by 4.5mW for each degree above
70˚C.
Note 7: All limits are guaranteed. All electrical characteristics having room-temperature limits are tested during production with T
Statistical Quality Control (SQC) methods. All hot and cold limits are guaranteed by correlating the electrical characteristics to process and temperature variations
and applying statistical process control.
Note 8: The target output voltage, which is labeled V
Note 9: An increase in the load current results in a slight decrease in the output voltage and vice versa.
Note 10: Dropout voltage is the input-to-output voltage difference at which the output voltage is 100mV below its nominal value. This specification does not apply
for input voltages below 2.5V.
Note 11: Turn-on time is time measured between the enable input just exceeding V
Note 12: The output noise varies with output voltage option. The 30µVrms is measured with 2.5V voltage option. To calculate an approximated output noise for other
options, use the equation: (30µVrms)(X)/2.5, where X is the voltage option value.
Recommended Output Capacitor
Note 13: The minimum value of capacitance for stability and correct operation is 0.7µF. The Capacitor tolerance should be
range. The full range of operating conditions for the capacitor in the application should be considered during device selection to ensure this minimum capacitance
specification is met. The recommended capacitor type is X7R to meet the full device temperature spec of -40
Hints.
Symbol
JA
C
into (Note 4) above. More power can be dissipated at ambient temperatures below 70˚C . Less power can be dissipated at ambient temperatures above 70˚C.
OUT
J
is the junction temperature, T
Turn-On Time
(Note 11)
Output Noise Voltage(Note 12)
Output Noise Density
Maximum Input Current at EN
Maximum Low Level Input
Voltage at EN
Minimum High Level Input
Voltage at EN
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
Output Capacitor
Parameter
Parameter
IN
A
= V
is the ambient temperature, and θ
OUT(nom)
OUT(nom)
(Continued)
+ 0.5V, C
C
BW = 10 Hz to 100 kHz,
C
C
V
V
V
EN
IN
IN
BYPASS
OUT
BP
Capacitance(Note 13)
ESR
, is the desired voltage option.
= 2.5 to 6.0V
= 2.5 to 6.0V
= 0
= 0.4 and V
J
= 1µF
= 25˚C. Limits appearing in boldface type apply over the entire junction
IN
= 0.01 µF
= 1 µF, I
Conditions
Conditions
JA
IN
6
is the junction-to-ambient thermal resistance. The 364mW rating for SOT23-5
= 6.0
OUT
IH
and the output voltage just reaching 95% of its nominal value.
= 1mA, C
OUT
Nominal
= 1 µF, C
Value
o
C to 125
1.0
Typ
200
230
160
±
30
20
1
o
C. See the capacitor section in Application
BYPASS
±
Min
0.7
J
30% or better over the temperature
, 70˚C for T
5
Min
1.4
= 0.01µF. Typical values
J
, 70˚C for T
Limit
J
D
Limit
= 25˚C or correlated using
= (T
A
J
, and 220˚C/W for θ
Max
500
- T
Max
0.4
A
A
, and 220˚C/W for
)/θ
JA
,
nV/
µVrms
Units
Units
mΩ
nA
µF
µs
˚C
˚C
V
V
JA
.